Gaya APA

Cho, Y., Novianti, E, N. (2020). Why?Dangerous Substance=Material Berbahaya (cet 1). Jakarta: PT. Elex Media Komputindo.

Gaya MLA

Cho, Youngsun., Novianti, Endah, Nawang. "Why?Dangerous Substance=Material Berbahaya". cet 1 Jakarta: PT. Elex Media Komputindo, 2020. Text.